In a dramatic California test flight, SpaceX launched an upgraded, more powerful version of its Falcon 9 rocket Sunday -- a booster the company hopes will someday carry astronauts to the space station. Read More...

A Russian Soyuz rocket carrying two cosmonauts and a NASA astronaut blasted off from Kazakhstan Wednesday, climbed into orbit and docked with the International Space Station after a six-hour rendezvous. Read More...

An Orbital Sciences Corp. Cygnus cargo ship making its maiden flight to the International Space Station aborted its initial approach to the lab complex early Sunday because of suspect navigation data. Read More...

In a critical test flight for NASA's space station program, an Orbital Sciences Corp. Antares rocket blasted off Wednesday, lofting a Cygnus cargo ship on its maiden flight to the international lab complex. Read More...

A United Launch Alliance Atlas 5 rocket boosted a $900 million military communications satellite into space early Wednesday, the third in a series of high-speed, jam-resistant relay stations. Read More...

In a major milestone for NASA, Orbital Sciences Corp. is readying an Antares rocket for launch Wednesday to boost an unmanned Cygnus cargo ship on a maiden flight to the International Space Station. Read More...

NASA's Voyager 1 spacecraft, 36 years and 12 billion miles from Earth, has crossed the boundary between the sun's influence and interstellar space, becoming humanity's first true starship, scientists said Thursday. Read More...

Closing out a 166-day stay in orbit, two cosmonauts and a NASA astronaut rode a Russian Soyuz spacecraft back to Earth Tuesday, settling to a jarring rocket-assisted touchdown on the steppe of Kazakhstan. Read More...

Lighting up the night sky with a trail of fiery exhaust, an Orbital Sciences Minotaur 5 rocket blazed away from the Virginia coast late Friday, boosting a small NASA probe on a trajectory toward the moon. Read More...

An innovative spacecraft perched atop a five-stage booster is poised for launch from the Virginia coast late Friday on a mission to study the moon's ultra-thin atmosphere look for signs of suspended moon dust. Read More...